hi guy please help me ..
my 16v bluetop is idling at 1.4k rpm.. pretty i think...can any one show me how to adjust it to a little lower idling rpm please...
engine is pretty much not mod.. just intake and exhaust etc...
does this have some thing to do with the butterfly> opening?

check your idle screw on your throttle body. if you cant adust for the high idle then you might want to look into your idle air control valve.

There's a simple way to test the iacv. I described the process in this thread: viewtopic.php?f=9&t=2569&p=14400&hilit=iacv#p14400 . The same process is outlined in the service manual. I had the same problem recently and it was a sticky iacv. It took like 15 minutes of driving for the damn thing to close.

Also check for vacuum leaks. You can just spray brake cleaner on the vacuum lines with the engine running. Listen to see if the idle changes - that will indicate a leak.

OK after i carefully check again.. i actually have a wire pluged in wrong location... and it now idling at 1.2k rpm... but i do have a problem that it a bit irritating ,
every time after i step on the gas peddle .. and when i release it... it take about 2 second before it actually release the rpm... and feel like my engine is still accelerating . but of course i step on my clutch.. it a bit weird.. does any one else have this issue with their car?
i checked the valve connected to iacv it look like it slow to release pressure or too much pressure..
is it like you guy talking about it dirty inside and need a hard cleaning?

i used this to fix my idle

http://www.ksdengineering.com/KSDEngine ... _p_19.html

even a cool video

http://youtu.be/ciptJCCeQkU

haha OK thank you every one

My solution, perhaps not for everyone, but it fits my needs perfectly:

Thinking Outside of the Box: The IACV You Need In Your Life!

R

thank you turtle.. great write up